1 /*
   2  * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 
  27 package sun.util.logging;
  28 
  29 import java.lang.System.Logger;
  30 import java.util.ResourceBundle;
  31 import java.util.function.Supplier;
  32 import sun.util.logger.LoggerWrapper;
  33 import sun.util.logging.PlatformLogger.Level;
  34 
  35 /**
  36  * Platform logger provides an API for the JRE components to log
  37  * messages.
  38  *
  39  * The PlatformLoggerBridge interface is implemented by the System.Logger
  40  * objects returned by our default JUL provider - so that JRE classes using
  41  * PlatformLogger see no difference when JUL is the actual backend.
  42  *
  43  * The recommendation for JRE classes going forward is to use
  44  * java.lang.System.getLogger(String name), which will
  45  * use Lazy Loggers when possible and necessary.
  46  *
  47  * PlatformLogger is now only a thin adaptation layer over the same
  48  * loggers than returned by java.lang.System.getLogger(String name).
  49  *
  50  * @since 1.9
  51  */
  52 public interface ConfigurableLoggerBridge {
  53 
  54     public abstract class LoggerConfiguration {
  55         public abstract Level getPlatformLevel();
  56         public abstract void setPlatformLevel(Level level);
  57     }
  58 
  59     public default LoggerConfiguration getLoggerConfiguration() {
  60         return null;
  61     }
  62 
  63     public static LoggerConfiguration getLoggerConfiguration(PlatformLoggerBridge logger) {
  64         if (logger instanceof ConfigurableLoggerBridge) {
  65             return ((ConfigurableLoggerBridge) logger).getLoggerConfiguration();
  66         } else {
  67             return null;
  68         }
  69     }
  70 }